{"schema_version":"secwatch.filing_event.v1","accession":"0001739445-26-000120","form_type":"8-K","ticker":"ACA","cik":"0001739445","company_name":"Arcosa, Inc.","filed_at":"2026-07-15T20:25:30+00:00","discovered_at":"2026-07-15T20:26:00.344398+00:00","generated_at":"2026-07-15T20:26:03.386609+00:00","sec_items":["1.04"],"event_type":"regulatory","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Arcosa receives MSHA 107(a) order at Stavola Bound Brook Quarry; terminated same day","bullets":["Order issued July 14, 2026, after material fell from highwall during drilling at Bridgewater, NJ quarry.","Track drill withdrawn for highwall integrity evaluation; order terminated shortly after inspection.","No injuries; operations resumed after relocating the track drill.","Third-party driller and blaster, Company personnel, and MSHA inspector consulted to resolve condition."],"urls":{"canonical":"https://secwatch.observer/filing/0001739445-26-000120","json":"https://secwatch.observer/filing/0001739445-26-000120.json","markdown":"https://secwatch.observer/filing/0001739445-26-000120.md","text":"https://secwatch.observer/filing/0001739445-26-000120.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1739445/000173944526000120/0001739445-26-000120-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1739445/000173944526000120/aca-20260714.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-07-15T20:26:03.386609+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}